.bg-root{--bg-entry:#22D3EE;--bg-product:#3FA9F5;--bg-variant:#6366F1;--bg-cart:#8B5CF6;--bg-checkout:#A855F7}.g-entry{background:var(--bg-entry)}.g-product{background:var(--bg-product)}.g-variant{background:var(--bg-variant)}.g-cart{background:var(--bg-cart)}.g-checkout{background:var(--bg-checkout)}.bg-progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:60;pointer-events:none}.bg-progress i{display:block;height:100%;transform-origin:0 50%;background:var(--lx-grad);transform:scaleX(0)}.lx .lx-links a[aria-current]{color:var(--lx-ink)}.bg-head{padding-top:clamp(44px,6cqi,92px);padding-bottom:clamp(32px,4cqi,52px);border-bottom:1px solid var(--lx-line)}.bg-crumbs{display:flex;gap:10px;font-size:14px;color:var(--lx-mute)}.lx .bg-crumbs a{color:#A5B4FC;text-decoration:none}.lx .bg-crumbs a:hover{color:#C7D2FE}.bg-head h1{margin:18px 0 0;max-width:21ch;font-size:clamp(36px,4.6cqi,62px);line-height:1.04;letter-spacing:-.042em;font-weight:600;text-wrap:balance}.bg-dek{margin:22px 0 0;max-width:62ch;font-size:clamp(17.5px,1.4cqi,21px);line-height:1.55;color:#A7B3C6}.bg-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;margin:30px 0 0;font-size:14px;color:var(--lx-mute)}.bg-meta svg{color:var(--lx-ink);margin-right:-6px}.bg-meta>span:first-of-type{color:var(--lx-ink);font-weight:500}.bg-meta>:not(svg):not(span:first-of-type):before{content:"·";margin-right:16px;color:var(--lx-faint)}.bg-layout{display:grid;grid-template-columns:220px minmax(0,760px);grid-gap:72px;gap:72px;align-items:start;padding-top:52px;padding-bottom:104px}.bg-side{position:-webkit-sticky;position:sticky;top:108px}.bg-toc p{margin:0 0 12px;font-size:13px;font-weight:600;color:var(--lx-mute)}.bg-toc ol{list-style:none;margin:0;padding:0;border-left:1px solid var(--lx-line2)}.lx .bg-toc a{display:block;margin-left:-1px;padding:7px 0 7px 14px;border-left:2px solid transparent;font-size:14px;line-height:1.35;color:var(--lx-mute);text-decoration:none;transition:color .15s,border-color .15s}.lx .bg-toc a:hover{color:var(--lx-ink)}.lx .bg-toc a[aria-current]{color:var(--lx-ink);border-left-color:#818CF8}.bg-toc-m{display:none;margin:0 0 28px;padding:14px 18px;border:1px solid var(--lx-line2);border-radius:14px;background:var(--lx-panel)}.bg-toc-m summary{cursor:pointer;font-size:15px;font-weight:600;color:var(--lx-ink)}.bg-toc-m ol{margin:12px 0 4px;padding-left:1.3em;font-size:15.5px}.bg-toc-m li{margin:6px 0}.bg-prose{max-width:720px;min-width:0;font-size:18px;line-height:1.75;color:#C3CDDA}.bg-prose p{margin:0 0 22px}.bg-prose h2{margin:80px 0 20px;font-size:clamp(26px,2.4cqi,34px);line-height:1.15;letter-spacing:-.03em;font-weight:600;color:var(--lx-ink);scroll-margin-top:104px;text-wrap:balance}.bg-h2-dot{display:inline-block;width:11px;height:11px;margin-right:14px;border-radius:50%;position:relative;top:-4px;box-shadow:0 0 18px currentColor}.bg-prose strong{color:var(--lx-ink);font-weight:600}.lx .bg-prose a{color:#A5B4FC;text-decoration:underline;-webkit-text-decoration-color:rgba(165,180,252,.4);text-decoration-color:rgba(165,180,252,.4);text-decoration-thickness:1px;text-underline-offset:3px;transition:color .15s,-webkit-text-decoration-color .15s;transition:color .15s,text-decoration-color .15s;transition:color .15s,text-decoration-color .15s,-webkit-text-decoration-color .15s}.lx .bg-prose a:hover{color:#C7D2FE;-webkit-text-decoration-color:rgba(199,210,254,.9);text-decoration-color:rgba(199,210,254,.9)}.bg-prose code{font-family:var(--font-mono);font-size:.86em;padding:.12em .38em;border-radius:6px;background:rgba(148,163,184,.12);color:#E2E8F0}.bg-prose ol,.bg-prose ul{margin:0 0 24px;padding-left:1.3em}.bg-prose li{margin:9px 0;padding-left:4px}.bg-prose li::marker{color:#818CF8}.bg-tldr{margin:0 0 8px;padding:22px 26px 6px;border-radius:18px;border:1px solid rgba(129,140,248,.3);background:linear-gradient(180deg,rgba(99,102,241,.09),rgba(99,102,241,.02))}.bg-prose .bg-tldr-t{margin:0 0 8px;font-size:15px;letter-spacing:0;line-height:1.4;color:#C7D2FE}.bg-tldr ul{margin:0 0 14px}.bg-tldr li{font-size:16.5px;line-height:1.6}.bg-note{margin:30px 0;padding:20px 24px 4px;border-radius:16px;border:1px solid var(--lx-line2);background:var(--lx-panel)}.bg-prose .bg-note p{font-size:16.5px;line-height:1.65;margin-bottom:16px}.bg-prose .bg-note-t{margin-bottom:6px;font-size:15px;font-weight:600;color:var(--lx-ink)}.bg-gates{margin:32px 0 36px;padding:28px 16px 18px;border-radius:20px;border:1px solid var(--lx-line2);background:radial-gradient(120% 140% at 50% 0,rgba(99,102,241,.12),rgba(99,102,241,0) 60%),var(--lx-panel)}.bg-gates ol{position:relative;list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr))}.bg-gates ol:before{content:"";position:absolute;left:10%;right:10%;top:47px;height:2px;border-radius:2px;background:linear-gradient(90deg,rgba(34,211,238,.55),rgba(99,102,241,.55),rgba(168,85,247,.55))}.bg-gates li{margin:0;padding:0}.bg-gates li>*{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;gap:2px;text-decoration:none}.bg-gates svg{display:block;width:44px;height:48px}.bg-gates b{margin-top:12px;font-size:15px;font-weight:600;color:var(--lx-ink)}.bg-gates a span,.bg-gates span span{font-size:13px;color:var(--lx-mute)}.lx .bg-prose .bg-gates a{color:inherit;text-decoration:none}.lx .bg-gates a:hover b{color:#C7D2FE}.bg-gates figcaption{margin-top:18px;text-align:center;font-size:13px;line-height:1.5;color:var(--lx-faint)}.bg-gates.is-compact{margin:26px 0 0;padding:22px 0 0;border:0;border-top:1px solid var(--lx-line);border-radius:0;background:none}.bg-gates.is-compact svg{width:34px;height:37px}.bg-gates.is-compact ol:before{top:36px}.bg-gates.is-compact b{margin-top:8px;font-size:13.5px}.bg-ob{display:grid;grid-template-columns:64px minmax(0,1fr);margin:36px 0;padding-top:34px;border-top:1px solid var(--lx-line);scroll-margin-top:104px}.bg-prose h2+.bg-ob{margin-top:10px;padding-top:6px;border-top:0}.bg-ob-n{padding-top:2px;font-size:32px;font-weight:600;line-height:1;letter-spacing:-.04em;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;background:var(--lx-grad);-webkit-background-clip:text;background-clip:text;color:transparent}.bg-prose .bg-ob-gate{display:flex;align-items:center;gap:8px;margin:0 0 6px;font-size:13.5px;line-height:1.4;color:var(--lx-mute)}.bg-ob-gate i{width:8px;height:8px;border-radius:50%}.bg-ob h3{margin:0 0 16px;font-size:23px;line-height:1.25;letter-spacing:-.02em;font-weight:600;color:var(--lx-ink);text-wrap:balance}.bg-prose .bg-lbl{margin:0 0 4px;font-size:14px;font-weight:600;line-height:1.4;color:var(--lx-mute)}.bg-fix{margin-top:18px;padding:16px 20px 2px;border-radius:14px;border:1px solid rgba(52,211,153,.24);background:rgba(52,211,153,.05)}.bg-prose .bg-fix .bg-lbl{color:#6EE7B7}.bg-prose .bg-fix p{margin-bottom:16px}.bg-prose .bg-ob-links{display:flex;flex-wrap:wrap;gap:6px 22px;margin:16px 0 0;font-size:14.5px}.lx .bg-prose .bg-ob-links a{color:var(--lx-mute);-webkit-text-decoration-color:var(--lx-line2);text-decoration-color:var(--lx-line2)}.lx .bg-prose .bg-ob-links a:hover{color:var(--lx-ink)}.bg-code{margin:14px 0 18px;border-radius:14px;overflow:hidden;border:1px solid var(--lx-line2);background:#07080D}.bg-code-h{display:flex;align-items:center;justify-content:space-between;padding:7px 8px 7px 16px;border-bottom:1px solid var(--lx-line);font-size:12.5px;color:var(--lx-mute)}.bg-code-h button{padding:4px 12px;border-radius:999px;border:1px solid var(--lx-line2);background:rgba(148,163,184,.08);color:var(--lx-body);font:500 12.5px/1.4 var(--font-body);cursor:pointer;transition:background .15s}.bg-code-h button:hover{background:rgba(148,163,184,.18)}.bg-code pre{margin:0;padding:16px 18px;overflow-x:auto;font:13.5px/1.65 var(--font-mono);color:#D7DEE8;-moz-tab-size:2;tab-size:2}.bg-prose .bg-code code{padding:0;border-radius:0;background:none;font-size:inherit;color:inherit}.bg-prose .bg-check{list-style:none;padding:0}.bg-prose .bg-check li{position:relative;margin:14px 0;padding-left:36px}.bg-check li:before{content:"";position:absolute;left:0;top:5px;width:18px;height:18px;border-radius:5px;border:1.5px solid rgba(129,140,248,.65)}.bg-faq{margin-top:80px}.bg-prose .bg-faq h2{margin-top:0}.bg-prose .lx-qa summary{color:var(--lx-ink)}.bg-prose .lx-qa p{font-size:16.5px}.bg-cta{margin:64px 0 0;padding:32px;border-radius:22px;border:1px solid rgba(129,140,248,.32);background:radial-gradient(80% 120% at 100% 0,rgba(99,102,241,.22),rgba(99,102,241,0) 60%),var(--lx-panel)}.bg-prose .bg-cta h2{margin:0 0 10px;font-size:clamp(24px,2.2cqi,30px)}.bg-prose .bg-cta p{margin:0 0 22px;font-size:16.5px;color:var(--lx-body)}.bg-cta-b{display:flex;flex-wrap:wrap;gap:12px}.lx .bg-prose .bg-cta a.lx-btn{color:#05060A;text-decoration:none}.lx .bg-prose .bg-cta a.lx-btn-ghost{color:var(--lx-ink)}.bg-sources{margin-top:60px;font-size:15px;line-height:1.6}.bg-prose .bg-sources h2{margin:0 0 10px;font-size:20px}.bg-sources li{color:var(--lx-faint)}.bg-ihead{padding-top:clamp(56px,8cqi,116px);padding-bottom:40px}.bg-ihead h1{margin:0;font-size:clamp(48px,6.4cqi,92px);line-height:.95;letter-spacing:-.05em;font-weight:600}.bg-ihead p{margin:22px 0 0;max-width:60ch;font-size:clamp(17.5px,1.4cqi,20px);line-height:1.55;color:#A7B3C6}.lx .bg-rss{display:inline-block;margin-top:18px;font-size:14px;color:#A5B4FC;text-decoration:none}.lx .bg-rss:hover{color:#C7D2FE}.bg-list{display:grid;grid-gap:20px;gap:20px;padding-bottom:112px}.lx .bg-card{display:block;padding:32px 34px 28px;border-radius:22px;border:1px solid var(--lx-line2);background:var(--lx-panel);text-decoration:none;transition:border-color .2s,transform .2s}.lx .bg-card:hover{border-color:rgba(129,140,248,.55);transform:translateY(-2px)}.bg-card-lead{background:radial-gradient(70% 120% at 100% 0,rgba(99,102,241,.18),rgba(99,102,241,0) 60%),var(--lx-panel)}.bg-card-k{font-size:13.5px;color:var(--lx-mute)}.bg-card h2{margin:12px 0;max-width:24ch;font-size:clamp(26px,3.1cqi,44px);line-height:1.07;letter-spacing:-.035em;font-weight:600;color:var(--lx-ink);text-wrap:balance}.bg-card p{margin:0;max-width:64ch;font-size:17px;line-height:1.6;color:var(--lx-body)}.bg-card-m{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 16px;margin-top:22px;font-size:14px;color:var(--lx-mute)}.bg-card-go{color:#C7D2FE;font-weight:600}@media (max-width:1080px){.bg-layout{grid-template-columns:minmax(0,1fr);padding-top:36px}.bg-side{display:none}.bg-toc-m{display:block}.bg-prose{margin:0 auto}}@media (max-width:640px){.bg-meta{gap:6px 14px}.bg-meta>:not(svg):not(span:first-of-type):before{content:none}.bg-prose{font-size:17px;line-height:1.7}.bg-prose h2{margin-top:64px}.bg-ob{grid-template-columns:minmax(0,1fr)}.bg-ob-n{font-size:26px;margin-bottom:10px}.bg-note,.bg-tldr{padding-left:18px;padding-right:18px}.bg-fix{padding-left:16px;padding-right:16px}.bg-cta{padding:24px 20px}.lx .bg-card{padding:24px 20px 22px}.bg-gates{padding:22px 6px 16px}.bg-gates svg{width:32px;height:35px}.bg-gates ol:before{top:34px}.bg-gates b{margin-top:8px;font-size:12.5px}.bg-gates a span,.bg-gates span span{font-size:11px;text-align:center}}@media (prefers-reduced-motion:reduce){.lx .bg-card,.lx .bg-card:hover{transition:none;transform:none}}.bg-fig{margin:30px 0}.bg-fig img{display:block;width:100%;height:auto;border-radius:14px;border:1px solid var(--lx-line2)}.bg-prose .bg-fig figcaption{margin-top:10px;font-size:14.5px;line-height:1.55;color:var(--lx-mute)}.bg-cards{margin:30px 0;padding:26px 26px 24px;border-radius:18px;border:1px solid var(--lx-line2);background:radial-gradient(ellipse 70% 60% at 50% 0,rgba(99,102,241,.16),transparent 70%),var(--lx-panel)}.bg-prose .bg-cards-t{margin:0 0 12px;font-size:21px;font-weight:650;color:var(--lx-ink);letter-spacing:-.2px}.bg-prose .bg-cards-b{display:inline-block;margin:0 0 18px;padding:8px 14px;border-radius:10px;border:1px solid var(--lx-line2);font-size:15.5px;line-height:1.45}.bg-cards-g{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:14px;gap:14px}.bg-tc{padding:16px 18px;border-radius:14px;border:1px solid var(--lx-line);background:rgba(255,255,255,.03)}.bg-tc-n{display:block;margin-bottom:4px;font-size:13px;font-weight:600;color:#22D3EE}.bg-prose .bg-tc p{margin:0 0 10px;font-size:15.5px;line-height:1.5}.bg-prose .bg-tc .bg-tc-h{margin-bottom:6px;font-size:18px;font-weight:650;color:var(--lx-ink)}.bg-prose .bg-tc .bg-tc-ok{margin:0;padding-top:10px;border-top:1px solid var(--lx-line)}.bg-tc-ok b{color:#A5B4FC;font-weight:600}@media (max-width:640px){.bg-cards{padding:20px 16px}.bg-cards-g{grid-template-columns:1fr}}